1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // Time Projection Chamber //
21 // This class contains the basic functions for the Time Projection Chamber //
22 // detector. Functions specific to one particular geometry are //
23 // contained in the derived classes //
27 <img src="picts/AliTPCClass.gif">
32 ///////////////////////////////////////////////////////////////////////////////
36 #include <Riostream.h>
41 #include <TGeoGlobalMagField.h>
42 #include <TInterpreter.h>
45 #include <TObjectTable.h>
46 #include <TParticle.h>
49 #include <TStopwatch.h>
54 #include <TVirtualMC.h>
55 #include <TParameter.h>
57 #include "AliDigits.h"
60 #include "AliRunLoader.h"
61 #include "AliSimDigits.h"
64 #include "AliTPCDigitsArray.h"
65 #include "AliTPCLoader.h"
66 #include "AliTPCPRF2D.h"
67 #include "AliTPCParamSR.h"
68 #include "AliTPCRF1D.h"
69 #include "AliTPCTrackHitsV2.h"
70 #include "AliTrackReference.h"
73 #include "AliTPCDigitizer.h"
74 #include "AliTPCBuffer.h"
75 #include "AliTPCDDLRawData.h"
77 #include "AliTPCcalibDB.h"
78 #include "AliTPCCalPad.h"
79 #include "AliTPCCalROC.h"
80 #include "AliTPCExB.h"
81 #include "AliRawReader.h"
82 #include "AliTPCRawStreamV3.h"
83 #include "TTreeStream.h"
86 //_____________________________________________________________________________
87 AliTPC::AliTPC():AliDetector(),
97 fPrimaryIonisation(0),
109 // Default constructor
112 for(Int_t i=0;i<4;i++) fCurrentIndex[i]=0;
114 // fTrackHitsOld = 0;
115 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
116 fHitType = 4; // ROOT containers
118 fHitType = 2; //default CONTAINERS - based on ROOT structure
122 //_____________________________________________________________________________
123 AliTPC::AliTPC(const char *name, const char *title)
124 : AliDetector(name,title),
134 fPrimaryIonisation(0),
146 // Standard constructor
150 // Initialise arrays of hits and digits
151 fHits = new TClonesArray("AliTPChit", 176);
152 gAlice->GetMCApp()->AddHitList(fHits);
154 fTrackHits = new AliTPCTrackHitsV2;
155 fTrackHits->SetHitPrecision(0.002);
156 fTrackHits->SetStepPrecision(0.003);
157 fTrackHits->SetMaxDistance(100);
159 //fTrackHitsOld = new AliTPCTrackHits; //MI - 13.09.2000
160 //fTrackHitsOld->SetHitPrecision(0.002);
161 //fTrackHitsOld->SetStepPrecision(0.003);
162 //fTrackHitsOld->SetMaxDistance(100);
165 #if ROOT_VERSION_CODE >= ROOT_VERSION(4,0,1)
166 fHitType = 4; // ROOT containers
171 for(Int_t i=0;i<4;i++) fCurrentIndex[i]=0;
176 // Initialise color attributes
177 //PH SetMarkerColor(kYellow);
180 // Set TPC parameters
184 if (!strcmp(title,"Default")) {
185 //fTPCParam = new AliTPCParamSR;
186 fTPCParam = AliTPCcalibDB::Instance()->GetParameters();
188 AliWarning("In Config.C you must set non-default parameters.");
193 void AliTPC::CreateDebugStremer(){
195 // Create Debug streamer to check simulation
197 fDebugStreamer = new TTreeSRedirector("TPCSimdebug.root");
199 //_____________________________________________________________________________
210 delete fTrackHits; //MI 15.09.2000
211 // delete fTrackHitsOld; //MI 10.12.2001
214 delete [] fNoiseTable;
215 delete [] fActiveSectors;
216 if (fDebugStreamer) delete fDebugStreamer;
219 //_____________________________________________________________________________
220 void AliTPC::AddHit(Int_t track, Int_t *vol, Float_t *hits)
223 // Add a hit to the list
226 TClonesArray &lhits = *fHits;
227 new(lhits[fNhits++]) AliTPChit(fIshunt,track,vol,hits);
230 AddHit2(track,vol,hits);
233 //_____________________________________________________________________________
234 void AliTPC::CreateMaterials()
236 //-----------------------------------------------
237 // Create Materials for for TPC simulations
238 //-----------------------------------------------
240 //-----------------------------------------------------------------
241 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
242 //-----------------------------------------------------------------
244 Int_t iSXFLD=((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
245 Float_t sXMGMX=((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
247 Float_t amat[5]; // atomic numbers
248 Float_t zmat[5]; // z
249 Float_t wmat[5]; // proportions
255 //***************** Gases *************************
258 //--------------------------------------------------------------
259 // gases - air and CO2
260 //--------------------------------------------------------------
276 AliMixture(10,"CO2",amat,zmat,density,2,wmat);
291 AliMixture(11,"Air",amat,zmat,density,2,wmat);
293 //----------------------------------------------------------------
295 //----------------------------------------------------------------
298 // Drift gases 1 - nonsensitive, 2 - sensitive
299 // Ne-CO2 (90-10) (volume) values at 20deg and 1 atm.
300 // rho(Ne) = 0.839 g/cm^3, rho(CO2) = 1.842 g/cm^3
313 //wmat[0]=0.756992632;
315 //wmat[1]=0.056235789;
317 //wmat[2]=0.128469474;
319 // wmat[3]=0.058395789;
323 AliMixture(12,"Ne-CO2-1",amat,zmat,density,3,wmat);
324 AliMixture(13,"Ne-CO2-2",amat,zmat,density,3,wmat);
325 AliMixture(35,"Ne-CO2-3",amat,zmat,density,3,wmat);
326 //----------------------------------------------------------------------
328 //----------------------------------------------------------------------
350 AliMixture(14,"Kevlar",amat,zmat,density,-4,wmat);
371 AliMixture(15,"NOMEX",amat,zmat,density,-4,wmat);
389 AliMixture(16,"Makrolon",amat,zmat,density,-3,wmat);
407 AliMixture(17, "Tedlar",amat,zmat,density,-3,wmat);
425 AliMixture(18, "Mylar",amat,zmat,density,-3,wmat);
426 // material for "prepregs"
427 // Epoxy - C14 H20 O3
430 // prepreg1 60% C-fiber, 40% epoxy (vol)
445 AliMixture(19, "Prepreg1",amat,zmat,density,3,wmat);
447 //prepreg2 60% glass-fiber, 40% epoxy
466 AliMixture(20, "Prepreg2",amat,zmat,density,4,wmat);
468 //prepreg3 50% glass-fiber, 50% epoxy
487 AliMixture(21, "Prepreg3",amat,zmat,density,4,wmat);
489 // G10 60% SiO2 40% epoxy
508 AliMixture(22, "G10",amat,zmat,density,4,wmat);
517 AliMaterial(23,"Al",amat[0],zmat[0],density,999.,999.);
519 // Si (for electronics
526 AliMaterial(24,"Si",amat[0],zmat[0],density,999.,999.);
535 AliMaterial(25,"Cu",amat[0],zmat[0],density,999.,999.);
553 AliMixture(33,"Brass",amat,zmat,density,2,wmat);
555 // Epoxy - C14 H20 O3
571 AliMixture(26,"Epoxy",amat,zmat,density,-3,wmat);
573 // epoxy film - 90% epoxy, 10% glass fiber
593 AliMixture(34, "Epoxy-film",amat,zmat,density,4,wmat);
611 AliMixture(27,"Plexiglas",amat,zmat,density,-3,wmat);
619 AliMaterial(28,"C",amat[0],zmat[0],density,999.,999.);
621 // Fe (steel for the inner heat screen)
629 AliMaterial(29,"Fe",amat[0],zmat[0],density,999.,999.);
631 // Peek - (C6H4-O-OC6H4-O-C6H4-CO)n
646 AliMixture(30,"Peek",amat,zmat,density,-3,wmat);
661 AliMixture(31,"Alumina",amat,zmat,density,-2,wmat);
680 AliMixture(32,"Water",amat,zmat,density,-2,wmat);
683 //----------------------------------------------------------
684 // tracking media for gases
685 //----------------------------------------------------------
687 AliMedium(0, "Air", 11, 0, iSXFLD, sXMGMX, 10., 999., .1, .01, .1);
688 AliMedium(1, "Ne-CO2-1", 12, 0, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
689 AliMedium(2, "Ne-CO2-2", 13, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
690 AliMedium(3,"CO2",10,0, iSXFLD, sXMGMX, 10., 999.,.1, .001, .001);
691 AliMedium(20, "Ne-CO2-3", 35, 1, iSXFLD, sXMGMX, 10., 999.,.1,.001, .001);
692 //-----------------------------------------------------------
693 // tracking media for solids
694 //-----------------------------------------------------------
696 AliMedium(4,"Al",23,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
697 AliMedium(5,"Kevlar",14,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
698 AliMedium(6,"Nomex",15,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
699 AliMedium(7,"Makrolon",16,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
700 AliMedium(8,"Mylar",18,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
701 AliMedium(9,"Tedlar",17,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
703 AliMedium(10,"Prepreg1",19,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
704 AliMedium(11,"Prepreg2",20,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
705 AliMedium(12,"Prepreg3",21,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
706 AliMedium(13,"Epoxy",26,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
708 AliMedium(14,"Cu",25,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
709 AliMedium(15,"Si",24,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
710 AliMedium(16,"G10",22,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
711 AliMedium(17,"Plexiglas",27,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
712 AliMedium(18,"Steel",29,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
713 AliMedium(19,"Peek",30,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
714 AliMedium(21,"Alumina",31,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
715 AliMedium(22,"Water",32,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
716 AliMedium(23,"Brass",33,0, iSXFLD, sXMGMX, 10., 999., .1, .001, .001);
717 AliMedium(24,"Epoxyfm",34,0, iSXFLD, sXMGMX, 10., 999., .1, .0005, .001);
720 void AliTPC::GenerNoise(Int_t tablesize)
723 //Generate table with noise
730 if (fNoiseTable) delete[] fNoiseTable;
731 fNoiseTable = new Float_t[tablesize];
732 fNoiseDepth = tablesize;
733 fCurrentNoise =0; //!index of the noise in the noise table
735 Float_t norm = fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac();
736 for (Int_t i=0;i<tablesize;i++) fNoiseTable[i]= gRandom->Gaus(0,norm);
739 Float_t AliTPC::GetNoise()
741 // get noise from table
742 // if ((fCurrentNoise%10)==0)
743 // fCurrentNoise= gRandom->Rndm()*fNoiseDepth;
744 if (fCurrentNoise>=fNoiseDepth) fCurrentNoise=0;
745 return fNoiseTable[fCurrentNoise++];
746 //gRandom->Gaus(0, fTPCParam->GetNoise()*fTPCParam->GetNoiseNormFac());
750 Bool_t AliTPC::IsSectorActive(Int_t sec) const
753 // check if the sector is active
754 if (!fActiveSectors) return kTRUE;
755 else return fActiveSectors[sec];
758 void AliTPC::SetActiveSectors(Int_t * sectors, Int_t n)
760 // activate interesting sectors
761 SetTreeAddress();//just for security
762 if (!fActiveSectors) fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
763 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
764 for (Int_t i=0;i<n;i++)
765 if ((sectors[i]>=0) && sectors[i]<fTPCParam->GetNSector()) fActiveSectors[sectors[i]]=kTRUE;
769 void AliTPC::SetActiveSectors(Int_t flag)
772 // activate sectors which were hitted by tracks
774 SetTreeAddress();//just for security
775 if (fHitType==0) return; // if Clones hit - not short volume ID information
776 if (!fActiveSectors) fActiveSectors = new Bool_t[fTPCParam->GetNSector()];
778 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kTRUE;
781 for (Int_t i=0;i<fTPCParam->GetNSector();i++) fActiveSectors[i]=kFALSE;
782 //TBranch * branch=0;
783 if (fLoader->TreeH() == 0x0)
785 AliFatal("Can not find TreeH in folder");
788 //if (fHitType>1) branch = fLoader->TreeH()->GetBranch("TPC2");
789 if (fHitType>1) fLoader->TreeH()->GetBranch("TPC2");
790 //else branch = fLoader->TreeH()->GetBranch("TPC");
791 else fLoader->TreeH()->GetBranch("TPC");
792 Stat_t ntracks = fLoader->TreeH()->GetEntries();
793 // loop over all hits
794 AliDebug(1,Form("Got %d tracks", (Int_t) ntracks));
796 for(Int_t track=0;track<ntracks;track++) {
799 if (fTrackHits && fHitType&4) {
800 TBranch * br1 = fLoader->TreeH()->GetBranch("fVolumes");
801 TBranch * br2 = fLoader->TreeH()->GetBranch("fNVolumes");
802 br1->GetEvent(track);
803 br2->GetEvent(track);
804 Int_t *volumes = fTrackHits->GetVolumes();
805 for (Int_t j=0;j<fTrackHits->GetNVolumes(); j++) {
806 if (volumes[j]>-1 && volumes[j]<fTPCParam->GetNSector()) {
807 fActiveSectors[volumes[j]]=kTRUE;
810 AliError(Form("Volume %d -> sector number %d is outside (0..%d)",
813 fTPCParam->GetNSector()));
819 // if (fTrackHitsOld && fHitType&2) {
820 // TBranch * br = fLoader->TreeH()->GetBranch("fTrackHitsInfo");
821 // br->GetEvent(track);
822 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
823 // for (UInt_t j=0;j<ar->GetSize();j++){
824 // fActiveSectors[((AliTrackHitsInfo*)ar->At(j))->fVolumeID] =kTRUE;
833 //_____________________________________________________________________________
834 void AliTPC::Digits2Raw()
836 // convert digits of the current event to raw data
838 static const Int_t kThreshold = 0;
840 fLoader->LoadDigits();
841 TTree* digits = fLoader->TreeD();
843 AliError("No digits tree");
849 AliSimDigits* digrow = &digarr;
850 digits->GetBranch("Segment")->SetAddress(&digrow);
852 const char* fileName = "AliTPCDDL.dat";
853 AliTPCBuffer* buffer = new AliTPCBuffer(fileName);
857 // 2: txt files with digits
858 //BE CAREFUL, verbose level 2 MUST be used only for debugging and
859 //it is highly suggested to use this mode only for debugging digits files
860 //reasonably small, because otherwise the size of the txt files can reach
861 //quickly several MB wasting time and disk space.
862 buffer->SetVerbose(0);
864 Int_t nEntries = Int_t(digits->GetEntries());
865 Int_t previousSector = -1;
867 for (Int_t i = 0; i < nEntries; i++) {
870 fTPCParam->AdjustSectorRow(digarr.GetID(), sector, row);
871 if(previousSector != sector) {
873 previousSector = sector;
876 if (sector < 36) { //inner sector [0;35]
878 //the whole row is written into the output file
879 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
880 sector, subSector, row);
882 //only the pads in the range [37;48] are written into the output file
883 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 1,
884 sector, subSector, row);
886 //only the pads outside the range [37;48] are written into the output file
887 buffer->WriteRowBinary(kThreshold, digrow, 37, 48, 2,
888 sector, subSector, row);
891 } else { //outer sector [36;71]
892 if (row == 54) subSector = 2;
893 if ((row != 27) && (row != 76)) {
894 buffer->WriteRowBinary(kThreshold, digrow, 0, 0, 0,
895 sector, subSector, row);
896 } else if (row == 27) {
897 //only the pads outside the range [43;46] are written into the output file
898 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 2,
899 sector, subSector, row);
901 //only the pads in the range [43;46] are written into the output file
902 buffer->WriteRowBinary(kThreshold, digrow, 43, 46, 1,
903 sector, subSector, row);
904 } else if (row == 76) {
905 //only the pads outside the range [33;88] are written into the output file
906 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 2,
907 sector, subSector, row);
909 //only the pads in the range [33;88] are written into the output file
910 buffer->WriteRowBinary(kThreshold, digrow, 33, 88, 1,
911 sector, subSector, row);
917 fLoader->UnloadDigits();
919 AliTPCDDLRawData rawWriter;
920 rawWriter.SetVerbose(0);
922 rawWriter.RawData(fileName);
923 gSystem->Unlink(fileName);
928 //_____________________________________________________________________________
929 Bool_t AliTPC::Raw2SDigits(AliRawReader* rawReader){
930 // Converts the TPC raw data into summable digits
931 // The method is used for merging simulated and
933 if (fLoader->TreeS() == 0x0 ) {
934 fLoader->MakeTree("S");
937 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
939 //setup TPCDigitsArray
940 if(GetDigitsArray()) delete GetDigitsArray();
942 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
943 arr->SetClass("AliSimDigits");
944 arr->Setup(fTPCParam);
945 arr->MakeTree(fLoader->TreeS());
949 // set zero suppression to "0"
950 fTPCParam->SetZeroSup(0);
953 const Int_t kmaxTime = fTPCParam->GetMaxTBin();
954 const Int_t kNIS = fTPCParam->GetNInnerSector();
955 const Int_t kNOS = fTPCParam->GetNOuterSector();
956 const Int_t kNS = kNIS + kNOS;
959 AliTPCROC * roc = AliTPCROC::Instance();
960 Int_t nRowsMax = roc->GetNRows(roc->GetNSector()-1);
961 Int_t nPadsMax = roc->GetNPads(roc->GetNSector()-1,nRowsMax-1);
962 Short_t** allBins = new Short_t*[nRowsMax];
963 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
964 Int_t maxBin = kmaxTime*nPadsMax;
965 allBins[iRow] = new Short_t[maxBin];
966 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
969 for(Int_t iSector = 0; iSector < kNS; iSector++) {
971 Int_t nRows = fTPCParam->GetNRow(iSector);
972 Int_t nDDLs = 0, indexDDL = 0;
973 if (iSector < kNIS) {
975 indexDDL = iSector * 2;
979 indexDDL = (iSector-kNIS) * 4 + kNIS * 2;
982 // Load the raw data for corresponding DDLs
985 AliTPCAltroMapping** mapping =AliTPCcalibDB::Instance()->GetMapping();
986 AliTPCRawStreamV3 input(rawReader,(AliAltroMapping**)mapping);
987 rawReader->Select("TPC",indexDDL,indexDDL+nDDLs-1);
990 for (Int_t iRow = 0; iRow < nRowsMax; iRow++) {
991 Int_t maxBin = kmaxTime*nPadsMax;
992 memset(allBins[iRow],0,sizeof(Short_t)*maxBin);
995 // Begin loop over altro data
996 while (input.NextDDL()) {
998 if (input.GetSector() != iSector)
999 AliFatal(Form("Sector index mismatch ! Expected (%d), but got (%d) !",iSector,input.GetSector()));
1002 while ( input.NextChannel() ) {
1004 Int_t iRow = input.GetRow();
1005 if (iRow < 0 || iRow >= nRows)
1006 AliFatal(Form("Pad-row index (%d) outside the range (%d -> %d) !",
1007 iRow, 0, nRows -1));
1008 Int_t iPad = input.GetPad();
1010 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
1012 if (iPad < 0 || iPad >= maxPad)
1013 AliFatal(Form("Pad index (%d) outside the range (%d -> %d) !",
1014 iPad, 0, maxPad -1));
1017 while ( input.NextBunch() ){
1018 Int_t startTbin = (Int_t)input.GetStartTimeBin();
1019 Int_t bunchlength = (Int_t)input.GetBunchLength();
1020 const UShort_t *sig = input.GetSignals();
1021 for (Int_t iTime = 0; iTime<bunchlength; iTime++){
1022 Int_t iTimeBin=startTbin-iTime;
1023 if ( iTimeBin < 0 || iTimeBin >= kmaxTime) {
1025 //AliFatal(Form("Timebin index (%d) outside the range (%d -> %d) !",
1026 // iTimeBin, 0, kmaxTime -1));
1029 Int_t maxBin = kmaxTime*maxPad;
1030 if (((iPad*kmaxTime+iTimeBin) >= maxBin) ||
1031 ((iPad*kmaxTime+iTimeBin) < 0))
1032 AliFatal(Form("Index outside the allowed range"
1033 " Sector=%d Row=%d Pad=%d Timebin=%d"
1034 " (Max.index=%d)",iSector,iRow,iPad,iTimeBin,maxBin));
1035 allBins[iRow][iPad*kmaxTime+iTimeBin] = sig[iTime];
1038 } // End loop over altro data
1041 // Now fill the digits array
1042 if (fDigitsArray->GetTree()==0) {
1043 AliFatal("Tree not set in fDigitsArray");
1046 for (Int_t iRow = 0; iRow < nRows; iRow++) {
1047 AliDigits * dig = fDigitsArray->CreateRow(iSector,iRow);
1048 Int_t maxPad = fTPCParam->GetNPads(iSector,iRow);
1049 for(Int_t iPad = 0; iPad < maxPad; iPad++) {
1050 for(Int_t iTimeBin = 0; iTimeBin < kmaxTime; iTimeBin++) {
1051 Short_t q = allBins[iRow][iPad*kmaxTime + iTimeBin];
1052 if (q <= 0) continue;
1054 dig->SetDigitFast((Short_t)q,iTimeBin,iPad);
1057 fDigitsArray->StoreRow(iSector,iRow);
1058 Int_t ndig = dig->GetDigitSize();
1061 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1062 iSector,iRow,ndig));
1064 fDigitsArray->ClearRow(iSector,iRow);
1066 } // end of the sector digitization
1068 // get LHC clock phase from the digits tree
1070 TParameter<float> *ph;
1072 TTree *digtree = fLoader->TreeD();
1074 if(digtree){ // if TreeD exists
1075 ph = (TParameter<float>*)digtree->GetUserInfo()->FindObject("lhcphase0");
1076 phase = ph->GetVal();
1078 else{ //TreeD does not exist
1082 // store lhc clock phase in S-digits tree
1084 fLoader->TreeS()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",phase));
1086 fLoader->WriteSDigits("OVERWRITE");
1088 if(GetDigitsArray()) delete GetDigitsArray();
1089 SetDigitsArray(0x0);
1092 for (Int_t iRow = 0; iRow < nRowsMax; iRow++)
1093 delete [] allBins[iRow];
1099 //______________________________________________________________________
1100 AliDigitizer* AliTPC::CreateDigitizer(AliDigitizationInput* digInput) const
1102 return new AliTPCDigitizer(digInput);
1105 void AliTPC::SDigits2Digits2(Int_t /*eventnumber*/)
1107 //create digits from summable digits
1108 GenerNoise(500000); //create teble with noise
1110 //conect tree with sSDigits
1111 TTree *t = fLoader->TreeS();
1114 fLoader->LoadSDigits("READ");
1115 t = fLoader->TreeS();
1117 AliError("Can not get input TreeS");
1122 if (fLoader->TreeD() == 0x0) fLoader->MakeTree("D");
1124 AliSimDigits digarr, *dummy=&digarr;
1125 TBranch* sdb = t->GetBranch("Segment");
1127 AliError("Can not find branch with segments in TreeS.");
1131 sdb->SetAddress(&dummy);
1133 Stat_t nentries = t->GetEntries();
1135 // set zero suppression
1137 fTPCParam->SetZeroSup(2);
1139 // get zero suppression
1141 Int_t zerosup = fTPCParam->GetZeroSup();
1143 //make tree with digits
1145 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1146 arr->SetClass("AliSimDigits");
1147 arr->Setup(fTPCParam);
1148 arr->MakeTree(fLoader->TreeD());
1150 AliTPCParam * par = fTPCParam;
1152 //Loop over segments of the TPC
1154 for (Int_t n=0; n<nentries; n++) {
1157 if (!par->AdjustSectorRow(digarr.GetID(),sec,row)) {
1158 AliWarning(Form("Invalid segment ID ! %d",digarr.GetID()));
1161 if (!IsSectorActive(sec)) continue;
1163 AliSimDigits * digrow =(AliSimDigits*) arr->CreateRow(sec,row);
1164 Int_t nrows = digrow->GetNRows();
1165 Int_t ncols = digrow->GetNCols();
1167 digrow->ExpandBuffer();
1168 digarr.ExpandBuffer();
1169 digrow->ExpandTrackBuffer();
1170 digarr.ExpandTrackBuffer();
1173 Short_t * pamp0 = digarr.GetDigits();
1174 Int_t * ptracks0 = digarr.GetTracks();
1175 Short_t * pamp1 = digrow->GetDigits();
1176 Int_t * ptracks1 = digrow->GetTracks();
1177 Int_t nelems =nrows*ncols;
1178 Int_t saturation = fTPCParam->GetADCSat() - 1;
1179 //use internal structure of the AliDigits - for speed reason
1180 //if you cahnge implementation
1181 //of the Alidigits - it must be rewriten -
1182 for (Int_t i= 0; i<nelems; i++){
1183 Float_t q = TMath::Nint(Float_t(*pamp0)/16.+GetNoise());
1185 if (q>saturation) q=saturation;
1188 ptracks1[0]=ptracks0[0];
1189 ptracks1[nelems]=ptracks0[nelems];
1190 ptracks1[2*nelems]=ptracks0[2*nelems];
1198 arr->StoreRow(sec,row);
1199 arr->ClearRow(sec,row);
1204 fLoader->WriteDigits("OVERWRITE");
1208 //__________________________________________________________________
1209 void AliTPC::SetDefaults(){
1211 // setting the defaults
1214 // Set response functions
1217 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1219 //AliTPCParamSR *param=(AliTPCParamSR*)gDirectory->Get("75x40_100x60");
1220 //gDirectory->Get("75x40_100x60");
1221 AliTPCParamSR *param = (AliTPCParamSR*)AliTPCcalibDB::Instance()->GetParameters();
1223 AliFatal("No TPC parameters found");
1226 if (!param->IsGeoRead()){
1228 // read transformation matrices for gGeoManager
1230 param->ReadGeoMatrices();
1235 AliTPCPRF2D * prfinner = new AliTPCPRF2D;
1236 AliTPCPRF2D * prfouter1 = new AliTPCPRF2D;
1237 AliTPCPRF2D * prfouter2 = new AliTPCPRF2D;
1240 //AliTPCRF1D * rf = new AliTPCRF1D(kTRUE);
1241 //rf->SetGauss(param->GetZSigma(),param->GetZWidth(),1.);
1242 //rf->SetOffset(3*param->GetZSigma());
1247 char strgamma4[1000];
1248 //sprintf(strgamma4,"AliTPCRF1D::Gamma4((x-0.135+%f)*%f,55,160)",3*param->GetZSigma(), 1000000000*param->GetTSample()/param->GetZWidth());
1250 snprintf(strgamma4,1000,"AliTPCRF1D::Gamma4((x-0.135+%f)*%f,55,160)",3*param->GetZSigma(), 1000000000*param->GetTSample()/param->GetZWidth());
1251 TF1 * fgamma4 = new TF1("fgamma4",strgamma4, -1,1);
1252 AliTPCRF1D * rf = new AliTPCRF1D(kTRUE,1000);
1253 rf->SetParam(fgamma4,param->GetZWidth(), 1,0.2);
1254 rf->SetOffset(3*param->GetZSigma());
1256 TDirectory *savedir=gDirectory;
1259 printf ("TPC MWPC readout\n");
1260 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2d.root");
1262 AliFatal("Can't open $ALICE_ROOT/TPC/AliTPCprf2d.root !");
1265 prfinner->Read("prf_07504_Gati_056068_d02");
1266 //PH Set different names
1267 s=prfinner->GetGRF()->GetName();
1269 prfinner->GetGRF()->SetName(s.Data());
1271 prfouter1->Read("prf_10006_Gati_047051_d03");
1272 s=prfouter1->GetGRF()->GetName();
1274 prfouter1->GetGRF()->SetName(s.Data());
1276 prfouter2->Read("prf_15006_Gati_047051_d03");
1277 s=prfouter2->GetGRF()->GetName();
1279 prfouter2->GetGRF()->SetName(s.Data());
1284 printf ("TPC GEM readout\n");
1285 TFile *f=TFile::Open("$ALICE_ROOT/TPC/AliTPCprf2dGEM.root");
1287 AliFatal("Can't open $ALICE_ROOT/TPC/AliTPCprf2dGEM.root !");
1290 prfinner->Read("prf0");
1291 //PH Set different names
1292 s=prfinner->GetGRF()->GetName();
1294 prfinner->GetGRF()->SetName(s.Data());
1296 prfouter1->Read("prf1");
1297 s=prfouter1->GetGRF()->GetName();
1299 prfouter1->GetGRF()->SetName(s.Data());
1301 prfouter2->Read("prf2");
1302 s=prfouter2->GetGRF()->GetName();
1304 prfouter2->GetGRF()->SetName(s.Data());
1309 param->SetInnerPRF(prfinner);
1310 param->SetOuter1PRF(prfouter1);
1311 param->SetOuter2PRF(prfouter2);
1312 param->SetTimeRF(rf);
1322 //__________________________________________________________________
1323 void AliTPC::Hits2Digits()
1326 // creates digits from hits
1328 if (!fTPCParam->IsGeoRead()){
1330 // read transformation matrices for gGeoManager
1332 fTPCParam->ReadGeoMatrices();
1335 fLoader->LoadHits("read");
1336 fLoader->LoadDigits("recreate");
1337 AliRunLoader* runLoader = fLoader->GetRunLoader();
1339 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1340 //PH runLoader->GetEvent(iEvent);
1341 Hits2Digits(iEvent);
1344 fLoader->UnloadHits();
1345 fLoader->UnloadDigits();
1347 //__________________________________________________________________
1348 void AliTPC::Hits2Digits(Int_t eventnumber)
1350 //----------------------------------------------------
1351 // Loop over all sectors for a single event
1352 //----------------------------------------------------
1353 AliRunLoader* rl = (AliRunLoader*)fLoader->GetEventFolder()->FindObject(AliRunLoader::GetRunLoaderName());
1354 rl->GetEvent(eventnumber);
1356 if (fLoader->TreeH() == 0x0) {
1357 if(fLoader->LoadHits()) {
1358 AliError("Can not load hits.");
1363 if (fLoader->TreeD() == 0x0 ) {
1364 fLoader->MakeTree("D");
1365 if (fLoader->TreeD() == 0x0 ) {
1366 AliError("Can not get TreeD");
1371 if(fDefaults == 0) SetDefaults(); // check if the parameters are set
1372 GenerNoise(500000); //create teble with noise
1374 //setup TPCDigitsArray
1376 if(GetDigitsArray()) delete GetDigitsArray();
1378 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1379 arr->SetClass("AliSimDigits");
1380 arr->Setup(fTPCParam);
1382 arr->MakeTree(fLoader->TreeD());
1383 SetDigitsArray(arr);
1385 fDigitsSwitch=0; // standard digits
1386 // here LHC clock phase
1388 switch (fLHCclockPhaseSw){
1395 lhcph = (Int_t)(gRandom->Rndm()/0.25);
1399 // not implemented yet
1402 // adding phase to the TreeD user info
1403 fLoader->TreeD()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",lhcph));
1405 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1406 if (IsSectorActive(isec)) {
1407 AliDebug(1,Form("Hits2Digits: Sector %d is active.",isec));
1408 Hits2DigitsSector(isec);
1411 AliDebug(1,Form("Hits2Digits: Sector %d is NOT active.",isec));
1414 fLoader->WriteDigits("OVERWRITE");
1416 //this line prevents the crash in the similar one
1417 //on the beginning of this method
1418 //destructor attempts to reset the tree, which is deleted by the loader
1419 //need to be redesign
1420 if(GetDigitsArray()) delete GetDigitsArray();
1421 SetDigitsArray(0x0);
1425 //__________________________________________________________________
1426 void AliTPC::Hits2SDigits2(Int_t eventnumber)
1429 //-----------------------------------------------------------
1430 // summable digits - 16 bit "ADC", no noise, no saturation
1431 //-----------------------------------------------------------
1433 //----------------------------------------------------
1434 // Loop over all sectors for a single event
1435 //----------------------------------------------------
1437 AliRunLoader* rl = fLoader->GetRunLoader();
1439 rl->GetEvent(eventnumber);
1440 if (fLoader->TreeH() == 0x0) {
1441 if(fLoader->LoadHits()) {
1442 AliError("Can not load hits.");
1449 if (fLoader->TreeS() == 0x0 ) {
1450 fLoader->MakeTree("S");
1453 if(fDefaults == 0) SetDefaults();
1455 GenerNoise(500000); //create table with noise
1456 //setup TPCDigitsArray
1458 if(GetDigitsArray()) delete GetDigitsArray();
1461 AliTPCDigitsArray *arr = new AliTPCDigitsArray;
1462 arr->SetClass("AliSimDigits");
1463 arr->Setup(fTPCParam);
1464 arr->MakeTree(fLoader->TreeS());
1466 SetDigitsArray(arr);
1468 fDigitsSwitch=1; // summable digits
1470 // set zero suppression to "0"
1471 // here LHC clock phase
1473 switch (fLHCclockPhaseSw){
1480 lhcph = (Int_t)(gRandom->Rndm()/0.25);
1484 // not implemented yet
1487 // adding phase to the TreeS user info
1489 fLoader->TreeS()->GetUserInfo()->Add(new TParameter<float>("lhcphase0",lhcph));
1491 fTPCParam->SetZeroSup(0);
1493 for(Int_t isec=0;isec<fTPCParam->GetNSector();isec++)
1494 if (IsSectorActive(isec)) {
1495 Hits2DigitsSector(isec);
1498 fLoader->WriteSDigits("OVERWRITE");
1500 //this line prevents the crash in the similar one
1501 //on the beginning of this method
1502 //destructor attempts to reset the tree, which is deleted by the loader
1503 //need to be redesign
1504 if(GetDigitsArray()) delete GetDigitsArray();
1505 SetDigitsArray(0x0);
1507 //__________________________________________________________________
1509 void AliTPC::Hits2SDigits()
1512 //-----------------------------------------------------------
1513 // summable digits - 16 bit "ADC", no noise, no saturation
1514 //-----------------------------------------------------------
1516 if (!fTPCParam->IsGeoRead()){
1518 // read transformation matrices for gGeoManager
1520 fTPCParam->ReadGeoMatrices();
1523 fLoader->LoadHits("read");
1524 fLoader->LoadSDigits("recreate");
1525 AliRunLoader* runLoader = fLoader->GetRunLoader();
1527 for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) {
1528 runLoader->GetEvent(iEvent);
1531 Hits2SDigits2(iEvent);
1534 fLoader->UnloadHits();
1535 fLoader->UnloadSDigits();
1536 if (fDebugStreamer) {
1537 delete fDebugStreamer;
1541 //_____________________________________________________________________________
1543 void AliTPC::Hits2DigitsSector(Int_t isec)
1545 //-------------------------------------------------------------------
1546 // TPC conversion from hits to digits.
1547 //-------------------------------------------------------------------
1549 //-----------------------------------------------------------------
1550 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1551 //-----------------------------------------------------------------
1553 //-------------------------------------------------------
1554 // Get the access to the track hits
1555 //-------------------------------------------------------
1557 // check if the parameters are set - important if one calls this method
1558 // directly, not from the Hits2Digits
1560 if(fDefaults == 0) SetDefaults();
1562 TTree *tH = fLoader->TreeH(); // pointer to the hits tree
1564 AliFatal("Can not find TreeH in folder");
1568 Stat_t ntracks = tH->GetEntries();
1570 Int_t nrows =fTPCParam->GetNRow(isec);
1572 TObjArray **row=new TObjArray* [nrows+2]; // 2 extra rows for cross talk
1573 for(Int_t j=0;j<nrows+2;j++) row[j]=0;
1575 MakeSector(isec,nrows,tH,ntracks,row);
1577 //--------------------------------------------------------
1578 // Digitize this sector, row by row
1579 // row[i] is the pointer to the TObjArray of TVectors,
1580 // each one containing electrons accepted on this
1581 // row, assigned into tracks
1582 //--------------------------------------------------------
1586 if (fDigitsArray->GetTree()==0) {
1587 AliFatal("Tree not set in fDigitsArray");
1590 for (i=0;i<nrows;i++){
1592 AliDigits * dig = fDigitsArray->CreateRow(isec,i);
1594 DigitizeRow(i,isec,row);
1596 fDigitsArray->StoreRow(isec,i);
1598 Int_t ndig = dig->GetDigitSize();
1601 Form("*** Sector, row, compressed digits %d %d %d ***\n",
1604 fDigitsArray->ClearRow(isec,i);
1607 } // end of the sector digitization
1609 for(i=0;i<nrows+2;i++){
1614 delete [] row; // delete the array of pointers to TObjArray-s
1617 } // end of Hits2DigitsSector
1620 //_____________________________________________________________________________
1621 void AliTPC::DigitizeRow(Int_t irow,Int_t isec,TObjArray **rows)
1623 //-----------------------------------------------------------
1624 // Single row digitization, coupling from the neighbouring
1625 // rows taken into account
1626 //-----------------------------------------------------------
1628 //-----------------------------------------------------------------
1629 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1630 // Modified: Marian Ivanov GSI Darmstadt, m.ivanov@gsi.de
1631 //-----------------------------------------------------------------
1633 Float_t zerosup = fTPCParam->GetZeroSup();
1634 AliTPCCalPad * gainTPC = AliTPCcalibDB::Instance()->GetDedxGainFactor();
1635 AliTPCCalPad * noiseTPC = AliTPCcalibDB::Instance()->GetPadNoise();
1636 AliTPCCalROC * gainROC = gainTPC->GetCalROC(isec); // pad gains per given sector
1637 AliTPCCalROC * noiseROC = noiseTPC->GetCalROC(isec); // noise per given sector
1640 fCurrentIndex[1]= isec;
1643 Int_t nofPads = fTPCParam->GetNPads(isec,irow);
1644 Int_t nofTbins = fTPCParam->GetMaxTBin();
1645 Int_t indexRange[4];
1647 // Integrated signal for this row
1648 // and a single track signal
1651 TMatrixF *m1 = new TMatrixF(0,nofPads,0,nofTbins); // integrated
1652 TMatrixF *m2 = new TMatrixF(0,nofPads,0,nofTbins); // single
1654 TMatrixF &total = *m1;
1656 // Array of pointers to the label-signal list
1658 Int_t nofDigits = nofPads*nofTbins; // number of digits for this row
1659 Float_t **pList = new Float_t* [nofDigits];
1663 for(lp=0;lp<nofDigits;lp++)pList[lp]=0; // set all pointers to NULL
1669 for (Int_t row= row1;row<=row2;row++){
1670 Int_t nTracks= rows[row]->GetEntries();
1671 for (i1=0;i1<nTracks;i1++){
1672 fCurrentIndex[2]= row;
1673 fCurrentIndex[3]=irow+1;
1675 m2->Zero(); // clear single track signal matrix
1676 Float_t trackLabel = GetSignal(rows[row],i1,m2,m1,indexRange);
1677 GetList(trackLabel,nofPads,m2,indexRange,pList);
1679 else GetSignal(rows[row],i1,0,m1,indexRange);
1685 AliDigits *dig = fDigitsArray->GetRow(isec,irow);
1687 Float_t fzerosup = zerosup+0.5;
1688 for(Int_t it=0;it<nofTbins;it++){
1689 for(Int_t ip=0;ip<nofPads;ip++){
1691 Float_t q=total(ip,it);
1692 if(fDigitsSwitch == 0){
1693 Float_t gain = gainROC->GetValue(irow,ip); // get gain for given - pad-row pad
1694 Float_t noisePad = noiseROC->GetValue(irow,ip);
1697 q+=GetNoise()*noisePad;
1698 if(q <=fzerosup) continue; // do not fill zeros
1700 if(q >= fTPCParam->GetADCSat()) q = fTPCParam->GetADCSat() - 1; // saturation
1705 if(q <= 0.) continue; // do not fill zeros
1706 if(q>2000.) q=2000.;
1712 // "real" signal or electronic noise (list = -1)?
1715 for(Int_t j1=0;j1<3;j1++){
1716 tracks[j1] = (pList[gi]) ?(Int_t)(*(pList[gi]+j1)) : -2;
1721 <A NAME="AliDigits"></A>
1722 using of AliDigits object
1725 dig->SetDigitFast((Short_t)q,it,ip);
1726 if (fDigitsArray->IsSimulated()) {
1727 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[0],it,ip,0);
1728 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[1],it,ip,1);
1729 ((AliSimDigits*)dig)->SetTrackIDFast(tracks[2],it,ip,2);
1732 } // end of loop over time buckets
1733 } // end of lop over pads
1739 // glitch filters if normal simulated digits
1741 if(!fDigitsSwitch) ((AliSimDigits*)dig)->GlitchFilter();
1743 // This row has been digitized, delete nonused stuff
1746 for(lp=0;lp<nofDigits;lp++){
1747 if(pList[lp]) delete [] pList[lp];
1755 } // end of DigitizeRow
1757 //_____________________________________________________________________________
1759 Float_t AliTPC::GetSignal(TObjArray *p1, Int_t ntr,
1760 TMatrixF *m1, TMatrixF *m2,Int_t *indexRange)
1763 //---------------------------------------------------------------
1764 // Calculates 2-D signal (pad,time) for a single track,
1765 // returns a pointer to the signal matrix and the track label
1766 // No digitization is performed at this level!!!
1767 //---------------------------------------------------------------
1769 //-----------------------------------------------------------------
1770 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1771 // Modified: Marian Ivanov
1772 //-----------------------------------------------------------------
1776 tv = (TVector*)p1->At(ntr); // pointer to a track
1779 Float_t label = v(0);
1780 Int_t centralPad = (fTPCParam->GetNPads(fCurrentIndex[1],fCurrentIndex[3]-1))/2;
1782 Int_t nElectrons = (tv->GetNrows()-1)/5;
1783 indexRange[0]=9999; // min pad
1784 indexRange[1]=-1; // max pad
1785 indexRange[2]=9999; //min time
1786 indexRange[3]=-1; // max time
1788 TMatrixF &signal = *m1;
1789 TMatrixF &total = *m2;
1791 // Get LHC clock phase
1793 TParameter<float> *ph;
1794 if(fDigitsSwitch){// s-digits
1795 ph = (TParameter<float>*)fLoader->TreeS()->GetUserInfo()->FindObject("lhcphase0");
1797 else{ // normal digits
1798 ph = (TParameter<float>*)fLoader->TreeD()->GetUserInfo()->FindObject("lhcphase0");
1800 // Loop over all electrons
1802 for(Int_t nel=0; nel<nElectrons; nel++){
1804 Float_t aval = v(idx+4);
1805 Float_t eltoadcfac=aval*fTPCParam->GetTotalNormFac();
1806 Float_t xyz[4]={v(idx+1),v(idx+2),v(idx+3),v(idx+5)};
1807 Int_t n = ((AliTPCParamSR*)fTPCParam)->CalcResponseFast(xyz,fCurrentIndex,
1808 fCurrentIndex[3],ph->GetVal());
1810 Int_t *index = fTPCParam->GetResBin(0);
1811 Float_t *weight = & (fTPCParam->GetResWeight(0));
1813 if (n>0) for (Int_t i =0; i<n; i++){
1814 Int_t pad=index[1]+centralPad; //in digit coordinates central pad has coordinate 0
1817 Int_t time=index[2];
1818 Float_t qweight = *(weight)*eltoadcfac;
1820 if (m1!=0) signal(pad,time)+=qweight;
1821 total(pad,time)+=qweight;
1822 if (indexRange[0]>pad) indexRange[0]=pad;
1823 if (indexRange[1]<pad) indexRange[1]=pad;
1824 if (indexRange[2]>time) indexRange[2]=time;
1825 if (indexRange[3]<time) indexRange[3]=time;
1832 } // end of loop over electrons
1834 return label; // returns track label when finished
1837 //_____________________________________________________________________________
1838 void AliTPC::GetList(Float_t label,Int_t np,TMatrixF *m,
1839 Int_t *indexRange, Float_t **pList)
1841 //----------------------------------------------------------------------
1842 // Updates the list of tracks contributing to digits for a given row
1843 //----------------------------------------------------------------------
1845 //-----------------------------------------------------------------
1846 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1847 //-----------------------------------------------------------------
1849 TMatrixF &signal = *m;
1851 // lop over nonzero digits
1853 for(Int_t it=indexRange[2];it<indexRange[3]+1;it++){
1854 for(Int_t ip=indexRange[0];ip<indexRange[1]+1;ip++){
1857 // accept only the contribution larger than 500 electrons (1/2 s_noise)
1859 if(signal(ip,it)<0.5) continue;
1861 Int_t globalIndex = it*np+ip; // globalIndex starts from 0!
1863 if(!pList[globalIndex]){
1866 // Create new list (6 elements - 3 signals and 3 labels),
1869 pList[globalIndex] = new Float_t [6];
1873 *pList[globalIndex] = -1.;
1874 *(pList[globalIndex]+1) = -1.;
1875 *(pList[globalIndex]+2) = -1.;
1876 *(pList[globalIndex]+3) = -1.;
1877 *(pList[globalIndex]+4) = -1.;
1878 *(pList[globalIndex]+5) = -1.;
1880 *pList[globalIndex] = label;
1881 *(pList[globalIndex]+3) = signal(ip,it);
1885 // check the signal magnitude
1887 Float_t highest = *(pList[globalIndex]+3);
1888 Float_t middle = *(pList[globalIndex]+4);
1889 Float_t lowest = *(pList[globalIndex]+5);
1892 // compare the new signal with already existing list
1895 if(signal(ip,it)<lowest) continue; // neglect this track
1899 if (signal(ip,it)>highest){
1900 *(pList[globalIndex]+5) = middle;
1901 *(pList[globalIndex]+4) = highest;
1902 *(pList[globalIndex]+3) = signal(ip,it);
1904 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1905 *(pList[globalIndex]+1) = *pList[globalIndex];
1906 *pList[globalIndex] = label;
1908 else if (signal(ip,it)>middle){
1909 *(pList[globalIndex]+5) = middle;
1910 *(pList[globalIndex]+4) = signal(ip,it);
1912 *(pList[globalIndex]+2) = *(pList[globalIndex]+1);
1913 *(pList[globalIndex]+1) = label;
1916 *(pList[globalIndex]+5) = signal(ip,it);
1917 *(pList[globalIndex]+2) = label;
1921 } // end of loop over pads
1922 } // end of loop over time bins
1925 //___________________________________________________________________
1926 void AliTPC::MakeSector(Int_t isec,Int_t nrows,TTree *TH,
1927 Stat_t ntracks,TObjArray **row)
1930 //-----------------------------------------------------------------
1931 // Prepares the sector digitization, creates the vectors of
1932 // tracks for each row of this sector. The track vector
1933 // contains the track label and the position of electrons.
1934 //-----------------------------------------------------------------
1937 // The trasport of the electrons through TPC drift volume
1938 // Drift (drift velocity + velocity map(not yet implemented)))
1939 // Application of the random processes (diffusion, gas gain)
1940 // Systematic effects (ExB effect in drift volume + ROCs)
1943 // Loop over primary electrons:
1944 // Creation of the secondary electrons
1945 // Loop over electrons (primary+ secondaries)
1946 // Global coordinate frame:
1947 // 1. Skip electrons if attached
1948 // 2. ExB effect in drift volume
1949 // a.) Simulation calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
1950 // b.) Reconstruction - calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
1951 // 3. Generation of gas gain (Random - Exponential distribution)
1952 // 4. TransportElectron function (diffusion)
1954 // 5. Conversion to the local coordinate frame pad-row, pad, timebin
1955 // 6. Apply Time0 shift - AliTPCCalPad class
1956 // a.) Plus sign in simulation
1957 // b.) Minus sign in reconstruction
1960 //-----------------------------------------------------------------
1961 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
1962 // Origin: Marian Ivanov, marian.ivanov@cern.ch
1963 //-----------------------------------------------------------------
1964 AliTPCcalibDB* const calib=AliTPCcalibDB::Instance();
1965 if (gAlice){ // Set correctly the magnetic field in the ExB calculation
1966 if (!calib->GetExB()){
1967 AliMagF * field = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField());
1969 calib->SetExBField(field);
1974 Float_t gasgain = fTPCParam->GetGasGain();
1975 gasgain = gasgain/fGainFactor;
1979 AliTPChit *tpcHit; // pointer to a sigle TPC hit
1982 if (fHitType>1) branch = TH->GetBranch("TPC2");
1983 else branch = TH->GetBranch("TPC");
1986 //----------------------------------------------
1987 // Create TObjArray-s, one for each row,
1988 // each TObjArray will store the TVectors
1989 // of electrons, one TVectors per each track.
1990 //----------------------------------------------
1992 Int_t *nofElectrons = new Int_t [nrows+2]; // electron counter for each row
1993 TVector **tracks = new TVector* [nrows+2]; //pointers to the track vectors
1995 for(i=0; i<nrows+2; i++){
1996 row[i] = new TObjArray;
2003 //--------------------------------------------------------------------
2004 // Loop over tracks, the "track" contains the full history
2005 //--------------------------------------------------------------------
2007 Int_t previousTrack,currentTrack;
2008 previousTrack = -1; // nothing to store so far!
2010 for(Int_t track=0;track<ntracks;track++){
2011 Bool_t isInSector=kTRUE;
2013 isInSector = TrackInVolume(isec,track);
2014 if (!isInSector) continue;
2016 branch->GetEntry(track); // get next track
2020 tpcHit = (AliTPChit*)FirstHit(-1);
2022 //--------------------------------------------------------------
2024 //--------------------------------------------------------------
2029 Int_t sector=tpcHit->fSector; // sector number
2031 tpcHit = (AliTPChit*) NextHit();
2035 // Remove hits which arrive before the TPC opening gate signal
2036 if(((fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
2037 /fTPCParam->GetDriftV()+tpcHit->Time())<fTPCParam->GetGateDelay()) {
2038 tpcHit = (AliTPChit*) NextHit();
2042 currentTrack = tpcHit->Track(); // track number
2044 if(currentTrack != previousTrack){
2046 // store already filled fTrack
2048 for(i=0;i<nrows+2;i++){
2049 if(previousTrack != -1){
2050 if(nofElectrons[i]>0){
2051 TVector &v = *tracks[i];
2052 v(0) = previousTrack;
2053 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
2054 row[i]->Add(tracks[i]);
2057 delete tracks[i]; // delete empty TVector
2063 tracks[i] = new TVector(601); // TVectors for the next fTrack
2065 } // end of loop over rows
2067 previousTrack=currentTrack; // update track label
2070 Int_t qI = (Int_t) (tpcHit->fQ); // energy loss (number of electrons)
2072 //---------------------------------------------------
2073 // Calculate the electron attachment probability
2074 //---------------------------------------------------
2077 Float_t time = 1.e6*(fTPCParam->GetZLength(isec)-TMath::Abs(tpcHit->Z()))
2078 /fTPCParam->GetDriftV();
2080 Float_t attProb = fTPCParam->GetAttCoef()*
2081 fTPCParam->GetOxyCont()*time; // fraction!
2083 //-----------------------------------------------
2084 // Loop over electrons
2085 //-----------------------------------------------
2088 for(Int_t nel=0;nel<qI;nel++){
2089 // skip if electron lost due to the attachment
2090 if((gRandom->Rndm(0)) < attProb) continue; // electron lost!
2095 Double_t dxyz0[3],dxyz1[3];
2096 dxyz0[0]=tpcHit->X();
2097 dxyz0[1]=tpcHit->Y();
2098 dxyz0[2]=tpcHit->Z();
2099 if (calib->GetExB()){
2100 calib->GetExB()->CorrectInverse(dxyz0,dxyz1);
2102 AliError("Not valid ExB calibration");
2103 dxyz1[0]=tpcHit->X();
2104 dxyz1[1]=tpcHit->Y();
2105 dxyz1[2]=tpcHit->Z();
2113 // protection for the nonphysical avalanche size (10**6 maximum)
2115 Double_t rn=TMath::Max(gRandom->Rndm(0),1.93e-22);
2116 xyz[3]= (Float_t) (-gasgain*TMath::Log(rn));
2119 TransportElectron(xyz,index);
2121 Int_t padrow = fTPCParam->GetPadRow(xyz,index);
2123 // Add Time0 correction due unisochronity
2124 // xyz[0] - pad row coordinate
2125 // xyz[1] - pad coordinate
2126 // xyz[2] - is in now time bin coordinate system
2127 Float_t correction =0;
2128 if (calib->GetPadTime0()){
2129 if (!calib->GetPadTime0()->GetCalROC(isec)) continue;
2130 Int_t npads = fTPCParam->GetNPads(isec,padrow);
2131 // Int_t pad = TMath::Nint(xyz[1]+fTPCParam->GetNPads(isec,TMath::Nint(xyz[0]))*0.5);
2132 // pad numbering from -npads/2 .. npads/2-1
2133 Int_t pad = TMath::Nint(xyz[1]+npads/2);
2135 if (pad>=npads) pad=npads-1;
2136 correction = calib->GetPadTime0()->GetCalROC(isec)->GetValue(padrow,pad);
2137 // printf("%d\t%d\t%d\t%f\n",isec,padrow,pad,correction);
2138 if (fDebugStreamer){
2139 (*fDebugStreamer)<<"Time0"<<
2147 "cor="<<correction<<
2152 xyz[2]+=fTPCParam->GetNTBinsL1(); // adding Level 1 time bin offset
2154 // Electron track time (for pileup simulation)
2155 xyz[2]+=tpcHit->Time()/fTPCParam->GetTSample(); // adding time of flight
2159 // row 0 - cross talk from the innermost row
2160 // row fNRow+1 cross talk from the outermost row
2161 rowNumber = index[2]+1;
2162 //transform position to local digit coordinates
2163 //relative to nearest pad row
2164 if ((rowNumber<0)||rowNumber>fTPCParam->GetNRow(isec)+1) continue;
2166 if (isec <fTPCParam->GetNInnerSector()) {
2167 x1 = xyz[1]*fTPCParam->GetInnerPadPitchWidth();
2168 y1 = fTPCParam->GetYInner(rowNumber);
2171 x1=xyz[1]*fTPCParam->GetOuterPadPitchWidth();
2172 y1 = fTPCParam->GetYOuter(rowNumber);
2174 // gain inefficiency at the wires edges - linear
2177 if(x1>y1) xyz[3]*=TMath::Max(1.e-6,(y1-x1+1.)); */
2179 nofElectrons[rowNumber]++;
2180 //----------------------------------
2181 // Expand vector if necessary
2182 //----------------------------------
2183 if(nofElectrons[rowNumber]>120){
2184 Int_t range = tracks[rowNumber]->GetNrows();
2185 if((nofElectrons[rowNumber])>(range-1)/5){
2187 tracks[rowNumber]->ResizeTo(range+500); // Add 100 electrons
2191 TVector &v = *tracks[rowNumber];
2192 Int_t idx = 5*nofElectrons[rowNumber]-4;
2193 Real_t * position = &(((TVector&)v)(idx)); //make code faster
2194 memcpy(position,xyz,5*sizeof(Float_t));
2196 } // end of loop over electrons
2198 tpcHit = (AliTPChit*)NextHit();
2200 } // end of loop over hits
2201 } // end of loop over tracks
2204 // store remaining track (the last one) if not empty
2207 for(i=0;i<nrows+2;i++){
2208 if(nofElectrons[i]>0){
2209 TVector &v = *tracks[i];
2210 v(0) = previousTrack;
2211 tracks[i]->ResizeTo(5*nofElectrons[i]+1); // shrink if necessary
2212 row[i]->Add(tracks[i]);
2221 delete [] nofElectrons;
2223 } // end of MakeSector
2226 //_____________________________________________________________________________
2230 // Initialise TPC detector after definition of geometry
2232 AliDebug(1,"*********************************************");
2235 //_____________________________________________________________________________
2236 void AliTPC::ResetDigits()
2239 // Reset number of digits and the digits array for this detector
2242 if (fDigits) fDigits->Clear();
2247 //_____________________________________________________________________________
2248 void AliTPC::SetSens(Int_t sens)
2251 //-------------------------------------------------------------
2252 // Activates/deactivates the sensitive strips at the center of
2253 // the pad row -- this is for the space-point resolution calculations
2254 //-------------------------------------------------------------
2256 //-----------------------------------------------------------------
2257 // Origin: Marek Kowalski IFJ, Krakow, Marek.Kowalski@ifj.edu.pl
2258 //-----------------------------------------------------------------
2264 void AliTPC::SetSide(Float_t side=0.)
2266 // choice of the TPC side
2271 //_____________________________________________________________________________
2273 void AliTPC::TransportElectron(Float_t *xyz, Int_t *index)
2276 // electron transport taking into account:
2278 // 2.ExB at the wires
2279 // 3. nonisochronity
2281 // xyz and index must be already transformed to system 1
2284 fTPCParam->Transform1to2(xyz,index); // mis-alignment applied in this step
2287 Float_t driftl=xyz[2];
2288 if(driftl<0.01) driftl=0.01;
2289 driftl=TMath::Sqrt(driftl);
2290 Float_t sigT = driftl*(fTPCParam->GetDiffT());
2291 Float_t sigL = driftl*(fTPCParam->GetDiffL());
2292 xyz[0]=gRandom->Gaus(xyz[0],sigT);
2293 xyz[1]=gRandom->Gaus(xyz[1],sigT);
2294 xyz[2]=gRandom->Gaus(xyz[2],sigL);
2298 if (fTPCParam->GetMWPCReadout()==kTRUE){
2299 Float_t dx = fTPCParam->Transform2to2NearestWire(xyz,index);
2300 xyz[1]+=dx*(fTPCParam->GetOmegaTau());
2302 //add nonisochronity (not implemented yet)
2308 //______________________________________________________________________
2309 AliTPChit::AliTPChit()
2321 //_____________________________________________________________________________
2322 AliTPChit::AliTPChit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits)
2323 :AliHit(shunt,track),
2330 // Creates a TPC hit object
2341 //________________________________________________________________________
2342 // Additional code because of the AliTPCTrackHitsV2
2344 void AliTPC::MakeBranch(Option_t *option)
2347 // Create a new branch in the current Root Tree
2348 // The branch of fHits is automatically split
2349 // MI change 14.09.2000
2351 if (fHitType<2) return;
2352 char branchname[10];
2353 //sprintf(branchname,"%s2",GetName());
2354 snprintf(branchname,10,"%s2",GetName());
2356 // Get the pointer to the header
2357 const char *cH = strstr(option,"H");
2359 if (fTrackHits && fLoader->TreeH() && cH && fHitType&4) {
2360 AliDebug(1,"Making branch for Type 4 Hits");
2361 fLoader->TreeH()->Branch(branchname,"AliTPCTrackHitsV2",&fTrackHits,fBufferSize,99);
2364 // if (fTrackHitsOld && fLoader->TreeH() && cH && fHitType&2) {
2365 // AliDebug(1,"Making branch for Type 2 Hits");
2366 // AliObjectBranch * branch = new AliObjectBranch(branchname,"AliTPCTrackHits",&fTrackHitsOld,
2367 // fLoader->TreeH(),fBufferSize,99);
2368 // fLoader->TreeH()->GetListOfBranches()->Add(branch);
2372 void AliTPC::SetTreeAddress()
2374 //Sets tree address for hits
2376 if (fHits == 0x0 ) fHits = new TClonesArray("AliTPChit", 176);//skowron 20.06.03
2377 AliDetector::SetTreeAddress();
2379 if (fHitType>1) SetTreeAddress2();
2382 void AliTPC::SetTreeAddress2()
2385 // Set branch address for the TrackHits Tree
2390 char branchname[20];
2391 //sprintf(branchname,"%s2",GetName());
2392 snprintf(branchname,20,"%s2",GetName());
2394 // Branch address for hit tree
2395 TTree *treeH = fLoader->TreeH();
2396 if ((treeH)&&(fHitType&4)) {
2397 branch = treeH->GetBranch(branchname);
2399 branch->SetAddress(&fTrackHits);
2400 AliDebug(1,"fHitType&4 Setting");
2403 AliDebug(1,"fHitType&4 Failed (can not find branch)");
2406 // if ((treeH)&&(fHitType&2)) {
2407 // branch = treeH->GetBranch(branchname);
2409 // branch->SetAddress(&fTrackHitsOld);
2410 // AliDebug(1,"fHitType&2 Setting");
2413 // AliDebug(1,"fHitType&2 Failed (can not find branch)");
2417 void AliTPC::FinishPrimary()
2419 if (fTrackHits &&fHitType&4) fTrackHits->FlushHitStack();
2420 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->FlushHitStack();
2424 void AliTPC::AddHit2(Int_t track, Int_t *vol, Float_t *hits)
2427 // add hit to the list
2431 int primary = gAlice->GetMCApp()->GetPrimary(track);
2432 gAlice->GetMCApp()->Particle(primary)->SetBit(kKeepBit);
2436 gAlice->GetMCApp()->FlagTrack(track);
2438 if (fTrackHits && fHitType&4)
2439 fTrackHits->AddHitKartez(vol[0],rtrack, hits[0],
2440 hits[1],hits[2],(Int_t)hits[3],hits[4]);
2441 // if (fTrackHitsOld &&fHitType&2 )
2442 // fTrackHitsOld->AddHitKartez(vol[0],rtrack, hits[0],
2443 // hits[1],hits[2],(Int_t)hits[3]);
2447 void AliTPC::ResetHits()
2449 if (fHitType&1) AliDetector::ResetHits();
2450 if (fHitType>1) ResetHits2();
2453 void AliTPC::ResetHits2()
2457 if (fTrackHits && fHitType&4) fTrackHits->Clear();
2458 // if (fTrackHitsOld && fHitType&2) fTrackHitsOld->Clear();
2462 AliHit* AliTPC::FirstHit(Int_t track)
2464 if (fHitType>1) return FirstHit2(track);
2465 return AliDetector::FirstHit(track);
2467 AliHit* AliTPC::NextHit()
2472 if (fHitType>1) return NextHit2();
2474 return AliDetector::NextHit();
2477 AliHit* AliTPC::FirstHit2(Int_t track)
2480 // Initialise the hit iterator
2481 // Return the address of the first hit for track
2482 // If track>=0 the track is read from disk
2483 // while if track<0 the first hit of the current
2484 // track is returned
2487 gAlice->GetMCApp()->ResetHits();
2488 fLoader->TreeH()->GetEvent(track);
2491 if (fTrackHits && fHitType&4) {
2492 fTrackHits->First();
2493 return fTrackHits->GetHit();
2495 // if (fTrackHitsOld && fHitType&2) {
2496 // fTrackHitsOld->First();
2497 // return fTrackHitsOld->GetHit();
2503 AliHit* AliTPC::NextHit2()
2506 //Return the next hit for the current track
2509 // if (fTrackHitsOld && fHitType&2) {
2510 // fTrackHitsOld->Next();
2511 // return fTrackHitsOld->GetHit();
2515 return fTrackHits->GetHit();
2521 void AliTPC::RemapTrackHitIDs(Int_t *map)
2526 if (!fTrackHits) return;
2528 // if (fTrackHitsOld && fHitType&2){
2529 // AliObjectArray * arr = fTrackHitsOld->fTrackHitsInfo;
2530 // for (UInt_t i=0;i<arr->GetSize();i++){
2531 // AliTrackHitsInfo * info = (AliTrackHitsInfo *)(arr->At(i));
2532 // info->fTrackID = map[info->fTrackID];
2535 // if (fTrackHitsOld && fHitType&4){
2536 if (fTrackHits && fHitType&4){
2537 TClonesArray * arr = fTrackHits->GetArray();;
2538 for (Int_t i=0;i<arr->GetEntriesFast();i++){
2539 AliTrackHitsParamV2 * info = (AliTrackHitsParamV2 *)(arr->At(i));
2540 info->SetTrackID(map[info->GetTrackID()]);
2545 Bool_t AliTPC::TrackInVolume(Int_t id,Int_t track)
2547 //return bool information - is track in given volume
2548 //load only part of the track information
2549 //return true if current track is in volume
2552 // if (fTrackHitsOld && fHitType&2) {
2553 // TBranch * br = fLoader->TreeH()->GetBranch("fTrackHitsInfo");
2554 // br->GetEvent(track);
2555 // AliObjectArray * ar = fTrackHitsOld->fTrackHitsInfo;
2556 // for (UInt_t j=0;j<ar->GetSize();j++){
2557 // if ( ((AliTrackHitsInfo*)ar->At(j))->fVolumeID==id) return kTRUE;
2561 if (fTrackHits && fHitType&4) {
2562 TBranch * br1 = fLoader->TreeH()->GetBranch("fVolumes");
2563 TBranch * br2 = fLoader->TreeH()->GetBranch("fNVolumes");
2564 br2->GetEvent(track);
2565 br1->GetEvent(track);
2566 Int_t *volumes = fTrackHits->GetVolumes();
2567 Int_t nvolumes = fTrackHits->GetNVolumes();
2568 if (!volumes && nvolumes>0) {
2569 AliWarning(Form("Problematic track\t%d\t%d",track,nvolumes));
2572 for (Int_t j=0;j<nvolumes; j++)
2573 if (volumes[j]==id) return kTRUE;
2577 TBranch * br = fLoader->TreeH()->GetBranch("fSector");
2578 br->GetEvent(track);
2579 for (Int_t j=0;j<fHits->GetEntriesFast();j++){
2580 if ( ((AliTPChit*)fHits->At(j))->fSector==id) return kTRUE;
2588 AliLoader* AliTPC::MakeLoader(const char* topfoldername)
2591 fLoader = new AliTPCLoader(GetName(),topfoldername);
2595 ////////////////////////////////////////////////////////////////////////
2596 AliTPCParam* AliTPC::LoadTPCParam(TFile *file) {
2598 // load TPC paarmeters from a given file or create new if the object
2599 // is not found there
2600 // 12/05/2003 This method should be moved to the AliTPCLoader
2601 // and one has to decide where to store the TPC parameters
2604 //sprintf(paramName,"75x40_100x60_150x60");
2605 snprintf(paramName,50,"75x40_100x60_150x60");
2606 AliTPCParam *paramTPC=(AliTPCParam*)file->Get(paramName);
2608 AliDebugClass(1,Form("TPC parameters %s found.",paramName));
2610 AliWarningClass("TPC parameters not found. Create new (they may be incorrect)");
2611 //paramTPC = new AliTPCParamSR;
2612 paramTPC = AliTPCcalibDB::Instance()->GetParameters();
2613 if (!paramTPC->IsGeoRead()){
2615 // read transformation matrices for gGeoManager
2617 paramTPC->ReadGeoMatrices();
2623 // the older version of parameters can be accessed with this code.
2624 // In some cases, we have old parameters saved in the file but
2625 // digits were created with new parameters, it can be distinguish
2626 // by the name of TPC TreeD. The code here is just for the case
2627 // we would need to compare with old data, uncomment it if needed.
2629 // char paramName[50];
2630 // sprintf(paramName,"75x40_100x60");
2631 // AliTPCParam *paramTPC=(AliTPCParam*)in->Get(paramName);
2633 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2635 // sprintf(paramName,"75x40_100x60_150x60");
2636 // paramTPC=(AliTPCParam*)in->Get(paramName);
2638 // cout<<"TPC parameters "<<paramName<<" found."<<endl;
2640 // cerr<<"TPC parameters not found. Create new (they may be incorrect)."
2642 // paramTPC = new AliTPCParamSR;